One problem related to car will not start has been reported for the 2018 GMC Acadia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 GMC Acadia based on all problems reported for the 2018 Acadia.
On separate occasions, both parked turned off and running down highway, the dash lights lit up and alarms chimed. Car wouldn't start, no cold a/c. The "service power steering" message displayed. Car didn't turn as well. Couldn't shift. After doing so for a about 2-3 minutes it would go back to normal. The attached photo was while driving down the road you'll notice it doesn't measure any rpm's however the car is moving about 40mph.